peace



(No Model.)

J. G.PEACE.

STUMP EXTRAUTOR.. ;No. .252,512. Patented Jan.`17,1882.

Fig 3.

\ UNITED STATES PATENT OFFICE.

JOHN PEAGE, OF SALEM, MISSOURI.

STUM P-EXT RACTO R.

SPECIFICATION forming part of Letters Patent No. 252,512, dated January1"?,

Application filed November 26, 1881. (No model.)

To all whom it may concern:

Be itknown thatl, JOHN G. PEACE, of Salem, in the county of Dent andState of Missouri, have invented a certain new and useful Improvement inStump-Extractors, of which the following is a f'ull,clear, and exactdescription, reference being had tothe accompanying drawings, formingpart of this specification.

My improvement relates to a cheap and effective machine `for extractingstumps or lifting heavy objects, such as stones, Snc.

My invention relates, tirst, to the frame or derrick, so made as toaccommodate itself to anyinclination or slope of the ground on which itrests.

My invention relates,.secondly, to the two levers supported by thederrick and having eccentric heads pivoted together eccentrically by apin and working on the cross-beam of the derrick. My `invention relates,thirdly, to a cup secured to or resting upon the cross-beam and forminga bearing-surface for the heads ofthe levers.

My invention relates, fourthly, to the hoisting-yoke working in slots ormortises in the cross-beam of the derrick, and havingits outer falcesserrated or notched to engage with supporting-pawls on the top of thederrick, and

with hoisting clevises secured by straps or linksl to the levers.

My invention relates, tthly, to a doubleheaded distance-bolt, for thepurpose hereinafter set forth.

My invention relates, siXthly, to the combination of the aboveelements.`

In the drawings, Figure l is a perspective view of my improvedapparatus, and Figs. 2 and 3 are detail vertical sections of the same.Fig. 4 is a perspective view of the distance bolt or bar. Figs. 5 and 6show modilications.

The derrick consists ot' a block or beam, A, withstationarysupporting-legsaat one end and pivoted supporting-legs a attheother end. The reason for having two of the legs thus pivoted to theblock is for the purpose of ad justin g this end of the block up or downto correspond with to their adjustmentl by a chain, a?, secured to oneofthe legs and engaging with a hook on the other. The adjustable legsare secured to the block Aby a pin, a3, inserted into or formed uponthis end ofthe block. They are retained in p lace by a Vsmall transversepin, a4. The block A is, mortised at a5 and a6 for the passage of theends ofthe reciprocating hoistingyoke B. (See Fig. 3.) The yokeconsists,.pref erably, of a single plate or hat bar of metal bent intothe propershape, (see Fig. 1,) and having its outer faces serrated ornotched, to be engaged by-retaining-pawls b, whose lower ends rest innotches of the block A, (see Fig. 3,) and by clevises o, connected bystraps or links c and bolt c2 to the hoisting-levers C. The inner endsof the hoisting-levers consist of. eccentric cams c3, which preferablyhave bearing in a cup,D, secured to or resting upon the block A, andwhich are pivoted together by the strap-bolt c2. The eccentric cams maybe made of metal and secured to the levers proper, as shown. Theconnecting-bolt c2 passes through the heads ot' the levers eccentricallyabove the center, so that as the levers are operated the yoke will beraised. The upper ends of the yoke are prevented from clamping upon thelevers under the pressure of the retainingpawls by a distance bolt orbar, E, having heads e, which embrace the yoke in such a manner that thebolt or bar has l'ree vertical movement.

The operation of the machine is as follows: The dei-rick is first placedover the stumpor object to be elevated and the yoke B connected to saidobject by the chain F, and if the object is on a side hill the legsaa-re adjusted to put the block A into a horizontal, and consequentlythe yoke B into a vertical, position.

The levers are next operated by power being applied to their outer ends,and by the eccentric heads. and the eccentric connection between themthe yoke is elevated, together with the object to which it is attached,and retained at that elevation bythe pawls b engagn g with the notcheson the yoke. It' one sweep of the levers does not raise the objectsuflic'ientl y, an d generally it will not, the outer ends ofthe leversare simply raised again, which will lower the clevises c and cause themto take a hold lower down on the yoke, and the operation is repeated.

IOO

As a modification of the -two operating-levers, oneonly may be used forlight Work, as shown in Fig. 5. 4 .f

As a modication of the pawls b, a link sup- 5 ported by a suitablebracket (see Fig. 6) may be used,said link clasping the bar in the sameway as the hoisting-links beneath. In this case theyoke is notnecessarily serrated or notched.

I claim as my inventibul. In a stump-extractor, the derriok consistingof block A, with stationary legs a and adjnstable legs a/,as and for thepurpose set forth.

2 In a stump extractor, the levers (Lhaving eccentric heads c3,eccentrically connected to- 15 gether by the strap-holt c2, as and forthe purpose set forth.

3. In a stump-extractor, the cup D, secured to or resting upon thederrick, and forming the bearing-surface of the levers, substantially asset forth.

4. In a stump-extractor, the distance bolt or bar E, having heads e, asand for the purpose set forth.

5. The combination of derrick A a a', yoke B, levers C, with eccentricheads c3, pawls b resting upon the top of the derrick and. engaging withthe notches on the yoke, as and for the purpose set forth,connecting-bolt c2, straps or links c', and clevises c, allsubstantially as set forth.

, JOHN G. PEAGE. Witnesses:

E. T. WINGO, W. R. LOVE.

